Added ruby-cas gem and user & model controller.
Fixed polish literals.
Sessions controller added.
Fundamental config.
Work on logging in users.
Merge branch 'development' of github.com:ArcCha/VLOQuiz into modeling-users

Conflicts:
	app/views/layouts/_navbar.html.erb
	config/routes.rb
	spec/requests/static_pages_spec.rb
Factory quickfix.
Session deleted, users are able to signin/singup.
Added remember token.
Users are now usable. Probably. Hopefully.
cos
Merge branch 'modeling-users' into development
Merge branch 'development' of github.com:ArcCha/VLOQuiz into development

Conflicts:
	app/controllers/games_controller.rb
	app/controllers/users_controller.rb
	app/helpers/users_helper.rb
	app/models/user.rb
	app/views/layouts/_navbar.html.erb
	config/routes.rb
	db/schema.rb
	spec/factories.rb
	spec/models/user_spec.rb